Process for the production of fresco-paintings and colored weather-proof architectural ornaments.



, No Drawing,

To all whom it may concern:

PA NT O "E GENB QBNER, 0F m ma amai rnoonss Eon T l-IE rnonuorron orrREsco-rAINTinesAND ootoitnn WEATHEB- raooraacnrriior RAL onnai'unms Be it known that I, EUGEN BORNER, a subject of the German Emperor, residing at Oifenburg, Baden, in the German Empire, have invented a newand useful Process for the Paintings and. Colored -Weatherproof Architectural Ornaments; andIdo hereby declare that the following is a full, clear, and exact description of the invention which will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the production of fresco-paintings and colored weatherproof architectural ornaments, that is plates or placques for ornamental purposes in buildings.

The mass for the production of the articles consists of an earthen alkaline .base with Water-glass, mixed with grains of powder of a substance vitrifying when heated. The articles molded from this mass are painted with smelting-colors, ceramic colors or glass colors. .Then the articles. are burned in a kiln at medium temperature, so that the colors begin to smelt and the body portion is closely bound, and so to speak vitrified. During the burning a chemical action takes place between the ceramic vcolors and the surface of the body mass, the colors or glazings partially sink in and combine with the constituents of the body mass, but are not absorbedfurther inward, but remain upon the exterior surf The burning temperature; may be 8001000 (1- In this method of face thereof.

working, plates, stones and architectural ornaments of all colors can be prepared.

As an earthen alkaline base, burntlime or caustically burnt magnesia. are used.

These materials are mixed with water-glass (silicate of sodium or potassium) to a paste, to

which feldspar, granite,porphyry, basaltor glass in a granular or pulverulentcondition are added. Only such natural or artificial additions are used whichwill bring about. the vitrification of the'whole" masswhen' fired. To increase the stiffness of the mass, sand and quartz, for instance ordinary pitsand, may be added.

Attention is directed to the fact, that the articles are finished "by burning. Indeed, lime and magnesia harden already with water-glass, but this hardening is insuffi- Production of Frescoproof quality can only be attained if the men.

Specification azale s-ra ta 1' Pat t dN jodgili, Application med mea -a 23,;911. Seria1No. 66 2,043. i

vitrifying 'materials (fluxes) are 'used to bind ,the mass when firing. Without the addition of fluxes the strength produced by y i burning the articles would alsonot be sufii cient. Therefore the vitrification hasnoth ing to do. withthe masses containing water I glass, wherein lime and water-glass only.

react while cold. U c a.

Themass'is veryplastic, easily, formed and imparts an enamel like gloss to the smelti'ng paints.

What )1 claim/ and desire to secure by Letters Patent is a I 5 1. The process of manufacturing plates,

or plaques for vornamental purposes in 9 buildings consisting in forming a. plastic composition of an earthen alkaline base with filling. material capable of vitrifying when heated,'water-glass and flux like, additions, then forming; the mass into ,a desired shape, paintingwith smelting colors upon the sa1d mass and then burning' the whole. j 1 I 2. The process ofrmanu-facturing plates 80. buildings consisting informing aplastic y i A org-plaques for ornamental purposes in composition of lime with1 finely divided. material capable of vitrifying when heated,"

forming the mass into a desired shape,

buildings consisting in forming, a plastic or plaques for. ornamental purposes in water-glass and fl'uxflike additions, jthen composition oflimewith water-glass and a feldspar and sand, then forming/the mass into a desired shape, painting with 'smelting colors upon the said mass and thenburning the whole.

a. The processi of manufacturingplates buildings consisting in forming a plastic composition of lime with water-glass andv feldspar and sand, then forming the mass into a desired shape, painting with ceramic and glass-colors upon the-said mass and then burning the whole.

5; The) process of manufacturing plates or plaques for ornamental purposes in buildings. consisting in forming a plastic composition-[of lime with water-glass and porphyry and sand, then forming the mass I into aldesired shapeQpainting with oeramie and glass-colors upon the said mass and 10 then, burning the whole.

u I EUGEN 'BORNER. I jWitnes ses: I i

' ADoL'P FATZAH,

.FI-{IMRITZ GOETZ.

Copies 01' this patent may be obtained for five cents catch by eddressing' th e Commissioner of Patents. Washington, D. C. r 

